1901,3.8,4.2,4.1,4.3,4.1,3.6,3.4,3.3,3.4,3.4,3,3.4
1902,3.8,4.2,4.1,4.3,4.1,3.6,3.4,3.3,3.4,3.4,3,3.4
1903,3.8,4.2,4.1,4.3,4.1,3.6,3.4,3.3,3.4,3.4,3,3.4
1904,3.8,4.2,4.1,4.3,4.1,3.6,3.4,3.3,3.4,3.4,3,3.4
1905,3.8,4.2,4.1,4.3,4.1,3.6,3.4,3.3,3.4,3.4,3,3.4
1906,3.8,4.2,4.1,4.3,4.1,3.6,3.4,3.3,3.4,3.4,3,3.4
1907,3.8,4.2,4.1,4.3,4.1,3.6,3.4,3.3,3.4,3.4,3,3.4
1908,3.8,4.2,4.1,4.3,4.1,3.6,3.4,3.3,3.4,3.4,3,3.4
1909,3.8,4.2,4.1,4.3,4.1,3.6,3.4,3.3,3.4,3.4,3,3.4
1910,3.8,4.2,4.1,4.2,3.9,3.4,3.2,3.1,3.2,3.2,2.8,3.2
1911,3.8,4.1,4,4.2,4,3.6,3.3,3.3,3.3,3.3,3,3.5
1912,3.9,4.4,4.3,4.5,4,3.4,3.3,3.2,3.4,3.4,2.9,3.4
1913,3.9,4.2,4.2,4.3,4,3.5,3.4,3.3,3.4,3.6,3.2,3.5
1914,3.9,4.3,4.1,4.3,4,3.5,3.3,3.3,3.4,3.4,3,3.5
1915,3.9,4.4,4.2,4.4,4.3,3.7,3.5,3.4,3.4,3.5,3,3.4
1916,3.8,4.2,4.1,4.4,4.1,3.6,3.4,3.3,3.5,3.4,3,3.3
1917,3.7,4.1,4,4.2,4,3.5,3.4,3.2,3.3,3.3,2.9,3.3
1918,3.7,4.1,4.1,4.2,4,3.6,3.6,3.3,3.4,3.5,3,3.4
1919,3.9,4.3,4.1,4.4,4.2,3.4,3.2,3.2,3.3,3.3,2.9,3.3
1920,3.8,4.2,4.1,4.2,3.9,3.4,3.1,3.2,3.3,3.3,2.9,3.2
1921,3.8,4.1,4,4.2,4,3.5,3.2,3.2,3.3,3.3,2.9,3.4
1922,3.8,4.2,4.1,4.3,4.1,3.6,3.4,3.3,3.4,3.4,3,3.4
1923,3.6,4.2,4.1,4.2,3.8,3.7,3,3.2,3.5,3.3,3,3.2
1924,4.2,4.2,4.3,4.4,4.2,3.5,3.3,3.3,3.1,3.2,2.8,3.3
1925,3.5,3.8,3.7,4.2,4.1,3.4,3.3,3.2,3.4,3.5,2.9,3.4
1926,3.9,4.3,4.3,4.6,4.3,3.8,3.4,3.3,3.4,3.4,3.1,3.2
1927,3.6,4.1,4.1,4.3,4.1,3.6,3.2,3.4,3.4,3.3,3.1,3.6
1928,3.8,4.3,4,4.4,4.1,3.6,3.3,3.3,3.4,3.4,3,3.3
1929,3.9,4.3,4,4.4,4,3.5,3.1,3.3,3.5,3.4,3.1,3.5
1930,3.4,4.2,4.1,4.4,4,3.4,3.3,3,3.2,3.4,3.2,3.5
1931,4,4.4,4.4,4.6,4.4,3.9,3.5,3.2,3.5,3.4,2.9,3.6
1932,4.1,4.3,4.1,4.8,4.3,3.7,3.3,3.5,3.4,3.4,3.1,3.5
1933,4.3,4.3,4.2,4.3,4.3,3.7,3.7,3,3.3,3,2.9,3.2
1934,3.5,3.8,3.6,4.1,3.8,3.7,3.2,3.1,3.6,3.1,2.9,3.3
1935,3.6,3.9,4.2,4.1,4,3.6,3.2,3.2,3,3.4,2.9,3.5
1936,3.8,4,4.3,4.2,4.1,3.4,3.1,2.8,3.2,3.2,3.2,3.2
1937,3.7,4.2,4.1,4.1,3.9,3.6,3.4,3.3,3.3,3.2,2.9,3.3
1938,3.7,4.1,3.9,4.2,4,3.4,3.3,3.1,3.2,3.3,2.8,3.3
1939,3.4,4.1,4,4,3.9,3.6,3.2,3.3,3.4,3.2,3,3.4
1940,3.4,3.7,3.3,4.3,3.9,3.4,3.3,3.3,3.2,3.3,2.8,2.9
1941,3.7,4.3,4.1,4.3,4.3,3.6,3.2,3.4,3.6,3.6,3.3,3.8
1942,3.8,4.1,4.1,4.1,3.7,3.1,3,2.8,3.2,3.3,3,3.3
1943,5.7,3.8,6,5.7,3.7,3.1,4.2,2.8,3.4,4.5,2.9,4.7
1944,5.2,5.2,5,5.6,4.8,4.1,5.6,4.6,5,4.3,3.8,4.2
1945,5.1,5.6,5.3,4,3.6,4.2,3.7,4.2,4.7,4.4,4.2,3.8
1946,3.4,4.8,4.9,5.3,4.6,4.3,3.9,3.7,3.9,4,3.7,3.5
1947,3.9,4,4,4.3,4,3.5,3.3,3.3,3.5,3.3,3,3.4
1948,3.9,4,4,4.4,5.1,3.9,3.6,3.8,4,3.2,3.3,3.2
1949,3.6,4.7,4.8,4.4,3.8,3.1,2.7,3,2.5,2.5,2.8,2.6
1950,2.6,2.9,2.6,2.6,3.2,1.8,1.8,2,3.3,2.9,2.9,3.1
1951,2.5,3.6,3.4,3.6,4,4.5,4,3.5,3.4,3.3,2.9,3.2
1952,3.2,3.9,3.9,3.9,4.3,3,2.8,2.7,2.6,2.7,2.1,2.9
1953,2.8,3.4,3.1,3.3,3.6,2.9,1.9,3.9,2.2,2.4,2.9,2.2
1954,3.6,3.8,3.7,4.3,3.3,2.8,2.8,2.7,2.7,2.7,2.8,3.1
1955,2.8,3.9,3.4,3.5,3.4,2.7,2.7,2.3,2.7,2.7,2.3,2.4
1956,2.8,3.6,3.7,3.8,3.3,2.8,2.8,2.8,2.8,2.6,2.1,2.8
1957,3.1,3.3,3.4,3.6,4.9,4.4,4.5,4.1,3.8,3.9,3.1,4
1958,2.7,3.9,3.6,4,3.9,3.5,3,2.9,2.8,2.8,2.3,3
1959,3.9,3.2,3.6,3.9,3.5,2.6,2.6,2.9,2.5,2.7,2.3,2.9
1960,3.1,3.4,2.8,3.4,3.1,2,2.6,2.3,2.5,2.2,2.3,3.3
1961,2.9,3.2,2.9,3.5,4.7,3.2,3.4,3,3.2,3.2,3.3,3.4
1962,4,4.4,3.7,3.8,3.9,2.4,3.8,3.5,3.3,3.5,3.4,3.3
1963,3.2,3.4,3.2,3.6,3.9,3.7,3.6,3.4,3.1,3,2.9,3.7
1964,4,5,3.5,3.9,4.1,3.4,3.2,2.8,2.6,2.8,2.9,2.7
1965,3.7,3.2,3.1,3.8,3.4,2.2,2.9,2,2.5,3,2.1,3
1966,3.6,3.5,3.4,4.1,4,3.1,3.5,3.1,2.8,2.7,2.3,2.5
1967,3.6,3.4,3.4,4,3.5,2,2.4,1.8,2,2.4,1.8,2.5
1968,2.7,3.1,3.6,4,2.4,2.5,2.6,3,3.5,2.4,1.6,2.3
1969,3.1,4,4,4.8,4.3,3.5,2.4,2.3,2.6,2.4,2.2,2.4
1970,3.3,3.5,4.4,4.2,3.3,3.1,3.4,2.4,2.7,2.6,1.9,2.8
1971,3.4,3.3,3,3.1,2.9,2.9,2.7,2.9,2.9,2.4,2,2.9
1972,3.6,3.7,3.4,4.6,5.2,4.4,4.7,4.9,3.8,4.1,3.1,4.4
1973,3.7,3.9,4.1,4,3.7,3.8,2.3,2.2,3.5,2.6,2,1.7
1974,3.1,3.2,3.2,3.6,3.6,3.7,2.4,2.9,2.7,2.4,2.6,2.7
1975,2.8,3.5,3.8,4,3.3,2.9,2.2,2.7,2.6,2.7,2,2.4
1976,2.6,3.4,3.6,3.8,4,4,3.9,3,2.4,3,2.6,3.2
1977,3.2,3.6,3.9,3.7,3.7,3.5,4,3.6,3.4,4.1,4.1,4.4
1978,3.9,5,3.9,3.3,3.7,3.4,3.1,1.9,3,3.4,3.7,3.3
1979,3.7,3.7,4.3,4,4,3.3,3.2,3.1,3.2,3.1,2.6,2.5
1980,3.3,3,4.1,4.5,3.8,3.6,3.1,2.8,2.7,3.1,2.1,2.3
1981,3.9,5.1,5.3,5.3,4.9,4.5,3.7,3.7,3.8,4.2,3.5,4.6
1982,4.1,5.1,5.3,5.1,4.8,4.4,4.1,3.6,4.4,4,3.9,4.4
1983,5.3,6,5.7,5.7,4.9,4.7,4.6,3.7,3.5,3.4,3.7,3.8
1984,2.4,4.2,4.6,4.7,3.6,4.1,3.1,3.7,3.6,4,2.8,4.1
1985,3.3,3.8,4.5,4.6,3.9,3.7,2.8,3.4,3.8,3.5,2.6,3.2
1986,4.7,4,4.9,4.9,4.7,3.8,3.2,3.9,3.5,4.1,3.4,4.5
1987,5,5.4,4.9,5.2,4.3,4.8,4.6,4.6,4.7,4,3.9,4.7
1988,4.8,5.3,5.4,5.4,5.1,4,3.5,3.6,4.2,3.7,3.4,3.5
1989,3.7,3.6,5,5.2,4.2,4.4,3.5,4.1,4.2,4.5,4.1,3.4
1990,5.1,4.9,5.3,5.5,4.4,4.5,4.3,3.5,4.3,4.1,4.1,3.9
1991,3.8,4.6,5,5.1,4.7,5.2,4.3,2.8,3.5,3.4,3.7,3.8
1992,4.5,4.5,4.1,4.8,4.4,4.2,3.4,4.2,3.7,3.6,3.2,3.9
1993,4.1,3.6,3.7,4,4.1,4.6,4.1,3.7,3.5,3.9,3,3.8
1994,3.3,4.1,4,4,4,4,3.7,2.8,3.7,3.7,3.4,3.7
1995,4.4,4.4,4.1,3.6,4.4,4.4,4.3,4.1,3.9,3.8,3.3,3
1996,2.8,3.9,4.5,4.6,4.2,3.7,4,3.7,3.9,3.8,3.1,3.7
1997,2.9,4.7,5.1,4.9,4.9,4.8,4.3,4,4.8,5,3.7,4.7
1998,6.4,5.8,6.3,5.8,5.4,4.8,4,4.5,4.1,4.6,3.4,3.6
1999,3.5,3.8,4.3,4.1,3.8,4.1,3.2,3.4,3.2,3.2,3.2,2.5
2000,2.7,2.4,2.2,2.7,4.1,4.1,4.1,3.8,3.4,4.1,3.8,3.7
2001,4.5,5.1,3.3,4,2.9,2.1,2.7,3,2.4,2.8,2.5,2.8
2002,3.3,4.2,4.2,4.6,4.6,2.7,2.9,3.1,3.1,3.8,4.2,4.2
2003,4,4.2,4.5,3.9,3.7,2.7,2.9,3,3.4,4,2.7,3.1
2004,4,4.8,5.1,4,3,2.4,2.5,2.7,2.8,4.2,2.7,4.1
2005,3.5,4.5,4,4.5,3.3,2.8,3,2.7,2.5,2.8,1.5,1.8
2006,3.2,3.4,4.2,3.7,3.5,3.8,4,3.3,3.4,4,3,3.2
2007,4.2,4.3,4.2,4.2,3.4,2.1,2.6,1.8,2.2,2,1.8,1.8
2008,3.3,3.6,3.7,3.5,3,2.9,3.3,3,3.3,3.1,2.6,2.9
2009,3.6,4,3.3,5.3,4.7,4.9,4.8,4.5,4.6,4.3,3.8,3.9
